|Publication number||US6993618 B2|
|Application number||US 10/707,835|
|Publication date||Jan 31, 2006|
|Filing date||Jan 15, 2004|
|Priority date||Jan 15, 2004|
|Also published as||US20050160223|
|Publication number||10707835, 707835, US 6993618 B2, US 6993618B2, US-B2-6993618, US6993618 B2, US6993618B2|
|Inventors||Ben Wei Chen, Tzu-Yih Chu, Sun-Teck See|
|Original Assignee||Super Talent Electronics, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (13), Non-Patent Citations (1), Referenced by (109), Classifications (8), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates to flash-memory-card readers, and more particularly to data exchangers.
Consumer devices such as digital cameras and personal digital assistants (PDAs) often use removable flash memory. The removable flash memory is in the form of a small card in a standardized form factor such as compact flash (CF), secure digital (SD), multimedia card (MMC), or Sony's Memory Stick.
Flash memory has gained wide acceptance for its nonvolatile storage, which is ideal for portable devices that may lose power, since the data is not lost when stored in the flash memory. Flash memories are constructed from electrically-erasable programmable read-only memory (EEPROM) cells.
Rather than using a randomly-addressable scheme such as is common with dynamic-random-access memory (DRAM), many flash memories use a block-based addressing where a command and an address are sent over the data bus and then a block of data is read or written. Since the data bus is also use to send commands and addresses, fewer pins are needed on the flash-memory chip, reducing cost. Thus flash memory is often used as a mass-storage device rather than a randomly-addressable device.
Universal-Serial-Bus (USB) has become a popular standard interface for connecting peripherals to a host such as a personal computer (PC). USB-based flash-memory storage devices or “drives” have been developed to transport data from one host to another, replacing floppy disks. While large external flash drives may be used, smaller USB flash drives known as key-chain or key drives have been a rapidly growing market.
Flash-card readers are sometimes used to transfer digital data, such as digital picture files, from the removable flash card to a PC. The flash-memory card can be removed from the digital camera and inserted into a slot on the flash-card reader. The user can then copy the digital-picture files to the PC using the flash-card reader.
Serial packets from host PC 10 are transferred through USB connector 12 to USB peripheral controller 15 in card reader 35. USB peripheral controller 15 decodes commands and addresses in the USB packets and performs requested operations. For example, host PC 10 can send USB packets requesting to read data on compact-flash card 22 that is inserted into a slot in card reader 35. USB peripheral controller 15 activates compact-flash interface 20 to read data from compact-flash card 22.
Several slots for several different kinds of flash cards may be present on card reader 35, although some card readers have only one type of slot. For example, a different size slot can accept smart-media flash-card 26, while another slot accepts secure-digital/multi-media card 32, and another accepts memory stick 36.
USB peripheral controller 15 can receive interrupts from one of flash interfaces 20, 24, 28, 24 when one of compact-flash card 22, smart-media flash-card 26, secure-digital/multi-media card 32, or memory stick 36, respectively, is inserted into a slot and pushed into an electrical connector in the slot. USB peripheral controller 15 can read configuration information from the newly-inserted flash card and then send a USB packet to host PC 10. Alternately, host PC 10 can periodically search for inserted flash cards by attempting to read from each of compact-flash card 22, smart-media flash-card 26, secure-digital/multi-media card 32, and memory stick 36. When the flash cards are not inserted, the reading fails.
Card reader 35 acts as a USB peripheral, while host PC 10 acts as the USB host. The USB host sends request packets to the USB peripheral, and the USB peripheral responds to these requests, such as by reading data. Special mass-storage class software running on host PC 10 schedules USB transactions to one or more USB peripherals. Many USB peripherals can be accessed when USB hubs are used, either on host PC 10 or externally.
While card reader 35 is useful, it requires host PC 10 for operation, since USB peripheral controller 15 can only respond to USB commands from host PC 10. USB peripheral controller 15 acts as a USB endpoint, merely responding to commands from the upstream USB host on the PC. When host PC 10 is not connected, card reader 35 is not able to read flash-memory cards. card reader 35 lacks USB host intelligence since it is a USB peripheral.
Sometimes a user is not near host PC 10 and yet desired to transfer digital files from a flash-memory card to a storage media. For example, a tourist may take many digital photos and fill his flash-memory card. The tourist could take along additional flash-memory cards, or find an Internet cafe and download the digital pictures from the flash card to a recordable optical disk or to the Internet, but the Internet cafe may not have a flash-card reader.
Portable flash-card readers have been developed to solve this problem. These portable flash-card readers may contain a small hard disk, allowing the user to transfer digital picture files from a removable flash-memory card to the hard disk. Later the portable flash-card reader may be connected to a PC and the digital picture files transferred from the small hard disk to the PC. Unfortunately, the small hard drive on the portable flash-card reader may fail after experiencing shock and have reliability problems.
The portable flash-card reader may be equipped with an internal, built-in flash memory rather than the small hard drive to alleviate reliability problems. However, the portable flash-card reader may become outdated as digital-photo sizes increase, since the amount of internal flash memory is fixed. It would be better to have an expandable amount of flash memory.
What is desired is a portable flash-card reader that has an expandable amount of flash memory. A flash-card exchanger that can transfer digital files from a removable flash-memory card to an expandable and removable flash memory is desired. A flash-card exchanger that can perform the transfer to the expandable flash memory without a host PC is desirable. A flash card reader that can operate as a USB peripheral when connected to a PC, but can also act as a USB host when not connected to a PC is desired.
The present invention relates to an improvement in flash-memory-card readers. The following description is presented to enable one of ordinary skill in the art to make and use the invention as provided in the context of a particular application and its requirements. Various modifications to the preferred embodiment will be apparent to those with skill in the art, and the general principles defined herein may be applied to other embodiments. Therefore, the present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
The inventors have realized that a self-contained flash-card exchanger can have an expandable memory capacity when a USB-memory key drive is used. The USB key drive contains flash memory and has a USB connector that can be plugged into the flash-card exchanger. The user can simply plug in a higher-capacity USB-memory key drive to increase memory. The flash-card exchanger has two USB plugs—one for connecting to the host PC, and a second for the USB key drive to plug into.
The USB controller inside the flash-card exchanger is modified to support a USB host mode as well as the normal USB peripheral mode. Special intelligence and controllers for the USB host mode allow data to be transferred from the flash-memory card to the USB-memory key drive when the host PC is not connected.
I/O bus 40 connects USB dual-mode microcontroller 30 to compact-flash interface 20, to smart-media interface 24, to secure-digital/multi-media interface 28, and to memory stick interface 34. Interfaces 20, 24, 28, 34 can each include an electrical connector that makes electrical connection with a properly-inserted flash card, and other components such as registers, buffers, and glue logic. One or more of interfaces 20, 24, 28, 34 may exist on a particular embodiment of flash-card exchanger 38. For example, a basic flash-card exchanger 38 may have only one slot for memory stick 36 and have only memory stick interface 34, while a more deluxe embodiment may have four slots and all four interfaces.
Usually only one of compact-flash card 22, smart-media flash-card 26, secure-digital/multi-media card 32, and memory stick interface 34 is plugged in at a time. When host PC 10 is connected, USB dual-mode microcontroller 30 acts as a USB peripheral, allowing host PC 10 to read or write data in the inserted flash card. For example, when compact-flash card 22 is inserted, host PC 10 can send USB packets with commands for USB dual-mode microcontroller 30 to read data from compact-flash card 22 through compact-flash interface 20. After the data is read, host PC 10 can send a command to erase the data in compact-flash card 22. USB dual-mode microcontroller 30 generates the lower-level flash-memory commands to perform the erase operation, sending a starting address and a length of the block to erase to compact-flash card 22, and then waiting for completion of the erase operation before sending a reply or completion packet back to host PC 10.
When host PC 10 is not connected, USB dual-mode microcontroller 30 acts as a USB host. The user can plug USB-memory key drive 16 into USB connector 17. When compact-flash card 22 is inserted, USB dual-mode microcontroller 30 acts as the USB host and generates the mass-storage class flash-memory commands to perform a read operation, sending a starting address and a length of the block to read from compact-flash card 22. Then USB packets with the data and a write request are generated by USB dual-mode microcontroller 30 and sent over USB bus 18 to USB-memory key drive 16. USB-memory key drive 16 writes the data to its flash memory and replies with a completion packet to USB dual-mode microcontroller 30. USB dual-mode microcontroller 30 can break the data up into several USB transactions if necessary.
USB dual-mode microcontroller 30 can operate in USB host mode or in USB peripheral mode, depending on whether host PC 10 is connected. USB dual-mode microcontroller 30 can contain firmware that performs USB host operations according to the USB “On-The-Go” specification, and can perform just a subset of USB host operations.
Some internal memory may also be used for data transfers. For example, flash-integrated memory module 42 may be built-in to flash-card exchanger 38 and connect to I/O bus 40. USB dual-mode microcontroller 30 may transfer data from compact-flash card 22 to flash-integrated memory module 42 when host PC 10 and USB-memory key drive 16 are not connected.
USB dual-mode microcontroller 30 can receive commands from the user who pushes buttons 46, which are read over I/O bus 40. The user can select the transfer direction (read or write) and can start the operation with buttons 46. The status of the transfer operation can be reported to the user through light-emitting diodes (LEDs) 44, which are also drive over I/O bus 40 by USB dual-mode microcontroller 30. Registers between I/O bus 40 and LEDs 44 can be added to store the display data.
Battery or power adapter 14 can include an internal battery and an external AC/DC adapter to provide power to USB dual-mode microcontroller 30 and other components.
Serial transceiver 54 connects to the differential data lines D+, D− of USB bus 18 and contains both a differential receiver and a differential transmitter. Data is encoded or decoded using NRZI encoding. Bit stuffing can be used to align data. An interrupt to CPU 52 can be generated when a start-of-packet sequence is detected on USB bus 18. CPU 52 can then execute a routine to handle the interrupt and process the new packet.
Serial engine 50 can perform higher-level functions such as checking cyclical-redundancy-check (CRC) checksums, locating packet identifiers, end-of-packet markers, higher-level frame markers, and converting serial data to parallel data words. The transmit and receive data is stored in serial-data buffer 64. Commands and addresses from the USB packets can also be stored in serial-data buffer 64, but are read by CPU 52 to determine what operation to perform.
GPIO 62 reads and writes data to I/O bus 40. Data from the compact-flash card can be read by sending flash-memory commands and addresses over I/O bus 40 in a sequence recognized by the compact-flash card, and then reading the flash data placed on I/O bus 40 by the compact-flash interface. The push buttons can generate an interrupt or be periodically polled through GPIO 62, and data to drive the LED's can be output by GPIO 62 over I/O bus 40.
When operating in USB host mode, serial engine 50 can generate packet fields and frame markers for outgoing USB packets to USB-memory key drive. Start-of-packet sequences and checksums can be generated by serial engine 50 or by serial transceiver 54.
When the user selects the READ direction of data transfer, LED 74 is lit to indicate that the transfer direction is from the flash card to USB-memory key drive 16. When the user selects the WRITE direction of data transfer, LED 76 is lit to indicate that the transfer direction is from USB-memory key drive 16 to the flash card.
Pressing GO button 80 causes the data transfer to begin. The lit LEDs can be made to flash or blink during the data transfer operation to let the user know that the operation is still in progress. Once the data transfer completes, the LEDs can stop flashing, letting the user know that it is OK to remove the flash-memory card and USB-memory key drive 16.
Main control program 100 waits for an interrupt to be generated from insertion of a flash card, USB-memory key drive, or connection to a host PC, step 102. When a new connection is detected, an insertion-status LED is lit, step 104. For example, when a flash card is inserted, LED 72 is lit, and when USB-memory key drive 16 is inserted, LED 70 is lit. When the host PC is connected, LED 78 is lit.
When the host PC is connected, step 115, then USB dual-mode microcontroller 30 operates in USB peripheral mode. Flash-card exchanger 38 acts as a flash-card reader, responding to commands from the host PC, step 106. The USB-memory key LED is turned off, even if USB-memory key drive 16 is inserted, and the host PC LED remains on, step 108. The host PC can read any inserted flash-memory cards, step 110, by sending USB packets to flash-card exchanger 38, which acts as a USB peripheral. Main control program 100 can return to step 102 waiting for the next insertion once transfer is complete. When the program detects that the host PC is detached, step 111, then the main control program can re-start or return to initial conditions at step 102.
When the host PC is not connected, step 115, and USB-memory key drive 16 is connected, step 118, then data can be transferred to USB-memory key drive 16 rather than to the host PC. USB dual-mode microcontroller 30 enters a local-host mode, step 112, and acts as a flash-card exchanger rather than a dumb card reader. Data can be exchanged between an inserted flash card and USB-memory key drive 16 using USB dual-mode microcontroller 30 as the USB host, step 114. Main control program 100 can return to step 102 waiting for the next insertion once transfer is complete. Once an insertion action is complete, the control program queries the user for further action by blinking the corresponding LED, until GO 80 button is pressed. If a new flash card needs to transfer the data, the old one can be removed. The user interface cycle starts all over again by waiting for the next insertion.
When the host PC is not connected, step 115, and USB-memory key drive 16 is also not connected, step 118, then data cannot be transferred. An error is signaled by blinking the USB-memory key LED. The LED can blink red or yellow rather than green to indicate the error. If flash-integrated memory module 42 is present, transfer could occur to the internal flash-integrated memory module using the local host mode (not shown).
The USB-memory LED 70 is turned on and off periodically, such as once per second, step 124, to indicate that the data transfer is ready to begin. Once the user pressed the GO button, step 126, the status and configuration of the inserted flash card and USB-memory key drive 16 can be read from the devices, step 128. A memory area or a register on the flash devices can be defined as containing the status and memory configuration, size, etc.
If there is some error indicated by the status register, or if the memory configurations are incompatible, step 130, then an error occurs. One of the LEDs, such as LED 70, is flashed red, step 132, to indicate a fatal error. For example, the status could indicate that the memory is faulty, or that the device to be written to is read-only. The target device may have insufficient memory to receive the data, or the read data may be protected, requiring authentification of the user's privilege.
When the selected transfer direction is from the USB-memory key drive to the flash-card (WRITE direction), step 140, then direction LED 76 is blinked green to indicate that the transfer is in progress in the reverse direction, step 148. USB-memory LED 70 is already blinking green. The data is then read from USB-memory key drive 16 over USB bus 18 using USB packets that are generated by USB dual-mode microcontroller 30 operating in the USB host mode. This data is then written from USB dual-mode microcontroller 30 to the flash card using flash commands transferred over I/O bus 40 that are generated by USB dual-mode microcontroller 30. Once all data is copied, step 150, then the blinking of direction LED 76 stops, step 146, and direction LED 76 can remain green for a successful transfer, or red for a failure of some kind, such as the user removing the flash card too soon.
Several other embodiments are contemplated by the inventors. For example a liquid crystal display (LCD) could be added to the flash-card exchanger. Text messages could appear on the LCD. Additional or fewer LED's and buttons could be used. The direction select buttons could be two separate buttons, a single rocker switch or button, or a single button that toggles the selected direction. When the LCD is provided, all five LEDs, fewer LED's, or no LEDs could be provided. Some or all of the LEDs could be multi-color LEDs. Normal operation can be indicated by green and errors by red. When yellow is also available, it can be used to prompt the user to do something, such as press the GO button.
A third USB connector for a second USB-memory key drive could be added, or data could be copied to a second USB-memory key drive that is inserted in the same USB connector after the first USB-memory key drive fills up. The USB connectors for the cable to the host PC and for the USB-memory key drive can be of different types. In the host PC card-reader mode, the USB memory key drive, acting as a peripheral like other flash memory card, can be read by the host PC. The disk format supported inside the flash storage exchanger may include those for Windows, Unix and Apple platforms. The disk format could be: File-Allocation Table (FAT), FAT32, New Technology File System (NTFS), Second Extended File System (Ext2), Third Extended File System (Ext3), Hierarchical File System (HFS), and Universal File System (UFS).
A direct-memory access (DMA) engine could be added to USB dual-mode microcontroller 30 to facilitate data transfers. An updateable memory such as an EEPROM could be added to the internal bus, allowing the firmware to be updateable. A default direction could be defined, such as READ, so that the user could simply press the GO button for READ, but has to press a select button for WRITE. Rather than use USB, other serial interfaces could be substituted for either the connection to host PC 10 or for USB-memory key drive 16, such as PCI Express, Express-Card, Firewire (IEEE 1394), serial ATA, serial attached small-computer system interface (SCSI), etc.
The microcontroller and components such as the serial engine, DMA, GPIO, and other controllers and functions can be implemented in a variety of ways. Functions can be programmed and executed by the CPU or other processor, or can be implemented in dedicated hardware, firmware, or in some combination. Many partitionings of the functions can be substituted. The programs can have additional loops, sub-routines, and links that are not shown in the simple examples. For example, insertion of another card, USB-memory key drive, or the host cable could cause the main program flow to jump back to the start to allow for re-configuration. These jumps are not shown in the flowcharts because of their complexity and the desire to explain a simplified and more understandable program flow. Error routines can be added, such as for when the user pressed the wrong button, such as the GO button before the removable flash card is inserted.
The host PC or USB dual-mode microcontroller 30 can transfer standard USB packets to the serial engine during a transaction, such as a token, data, and handshake packet. Other packet types or variations of these types can be defined for special purposes. These packets may include a control-program-request packet, a control-program-reply packet, a flash-memory-request packet, and a flash-memory-reply packet. The flash-memory request/reply packets may further include the following request/reply packet pairs: flash ID, read, write, erase, copy-back, reset, page-write, cache-write and read-status.
Alternate bus architectures with nested or segmented buses could be used internal or external to the microcontroller. Two or more internal buses can be used in USB dual-mode microcontroller 30 to increase throughput. More complex switch fabrics can be substituted for the internal buses.
The user can expand the available memory simply by plugging in a larger-capacity USB-memory key drive. Since memory prices tend to drop with time, the user could initially use a smaller-capacity USB-memory key drive and a year or two later buy a larger-capacity USB-memory key drive. Thus the user can easily expand the storage capacity on demand.
The flash-card exchanger is very easy to operate. The user simply plugs the USB-memory key drive into the USB connector, plugs the removable flash-memory card into the matching slot, and presses the GO button to copy files to the USB-memory key drive. The USB-memory key drive can later be plugged into a standard USB connector on a host PC and the files copied to the PC. Alternately, the flash-card exchanger can be plugged into a host PC and the files copied from the flash cards. The flash-card exchanger could take power from the host PC when connected, or use the battery or and external AC/DC adapter. The battery could be disposable or rechargeable. Eliminating an internal hard disk improves reliability since the moving disk is prone to failure.
Any advantages and benefits described may not apply to all embodiments of the invention. When the word “means” is recited in a claim element, Applicant intends for the claim element to fall under 35 USC Sect. 112, paragraph 6. Often a label of one or more words precedes the word “means”. The word or words preceding the word “means” is a label intended to ease referencing of claims elements and is not intended to convey a structural limitation. Such means-plus-function claims are intended to cover not only the structures described herein for performing the function and their structural equivalents, but also equivalent structures. For example, although a nail and a screw have different structures, they are equivalent structures since they both perform the function of fastening. Claims that do not use the word “means” are not intended to fall under 35 USC Sect. 112, paragraph 6. Signals are typically electronic signals, but may be optical signals such as can be carried over a fiber optic line.
The foregoing description of the embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US5773332||Feb 13, 1997||Jun 30, 1998||Xircom, Inc.||Adaptable communications connectors|
|US6055464 *||Apr 18, 1996||Apr 25, 2000||Sony Corporation||Electronic device and operating mode control method thereof|
|US6122694 *||Sep 15, 1997||Sep 19, 2000||Nec Corporation||Serial bus controller|
|US6372974||Jan 16, 2001||Apr 16, 2002||Intel Corporation||Method and apparatus for sharing music content between devices|
|US6438638||Jul 6, 2000||Aug 20, 2002||Onspec Electronic, Inc.||Flashtoaster for reading several types of flash-memory cards with or without a PC|
|US6463362 *||Mar 31, 2000||Oct 8, 2002||Sony Corporation||Electronic device and operating mode control method thereof|
|US6505263 *||Jan 25, 2000||Jan 7, 2003||Dell U.S.A. L.P.||Bus controller operating code in system memory|
|US6567273||Apr 25, 2002||May 20, 2003||Carry Computer Eng. Co., Ltd.||Small silicon disk card with a USB plug|
|US6813650 *||Oct 26, 1999||Nov 2, 2004||International Business Machines Corporation||Multimode non-standard universal serial bus computer input device|
|US6820160 *||Aug 21, 2001||Nov 16, 2004||Cypress Semiconductor Corporation||Apparatus for optically isolating a USB peripheral from a USB host|
|US20030079077||Oct 23, 2001||Apr 24, 2003||Flex-P Industries||Method and system for a compact flash memory controller|
|US20030093606||Oct 4, 2002||May 15, 2003||Sreenath Mambakkam||Multimode controller for intelligent and "dumb" flash cards|
|US20030145141||Jan 31, 2002||Jul 31, 2003||Chien-An Chen||Universal serial bus flash memory integrated circuit device|
|1||*||"Implementation of the USB interface in the instrumentation for sound and vibration measurement and analysis" by Podgorski et al. (abstract only) Publication Date: 2003.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7344072||Sep 29, 2006||Mar 18, 2008||Sandisk Corporation||Credit card sized USB flash drive|
|US7392941 *||Sep 26, 2003||Jul 1, 2008||Samsung Electronics Co., Ltd.||Security monitor apparatus and method using smart card|
|US7537169||Dec 10, 2007||May 26, 2009||Sandisk Corporation||Credit card sized USB flash drive|
|US7555582 *||Jun 30, 2009||Grady David Lambert||Portable universal serial bus memory devices and methods for using such devices|
|US7578446 *||May 1, 2007||Aug 25, 2009||Yen Shin||Identification card holder with flash memory card reader|
|US7606951||Oct 20, 2009||Woodbridge Nancy G||Memory reuse for multiple endpoints in USB device|
|US7660921||Oct 30, 2007||Feb 9, 2010||Brendan Keith Schenk||Two port USB digital storage device|
|US7685363 *||Dec 15, 2006||Mar 23, 2010||Power Quotient International Co., Ltd.||Low profile storage device|
|US7686654||Mar 30, 2010||Sandisk Corporation||Memory card for an ExpressCard slot|
|US7699660||Jun 29, 2007||Apr 20, 2010||Sandisk Corporation||Adapter for an expresscard slot|
|US7762849||Apr 15, 2008||Jul 27, 2010||Sandisk Corporation||Expandable and collapsible peripheral device|
|US7779184||Aug 17, 2010||Sandisk Corporation||Method of using the dual bus interface in an expresscard slot|
|US7780477||Jun 29, 2007||Aug 24, 2010||Sandisk Corporation||Adapter system for use with an expresscard slot|
|US7798840||Sep 21, 2010||Sandisk Corporation||Expandable and collapsible peripheral device|
|US7809873 *||Apr 11, 2008||Oct 5, 2010||Sandisk Il Ltd.||Direct data transfer between slave devices|
|US7865640 *||Jan 2, 2008||Jan 4, 2011||Buztronics, Inc.||USB web launcher using keyboard scancodes|
|US7913004 *||Aug 14, 2006||Mar 22, 2011||Sandisk Il Ltd||Portable selective memory data exchange device|
|US7969322 *||Sep 20, 2005||Jun 28, 2011||Panasonic Corporation||Processor|
|US8051229||Jun 29, 2007||Nov 1, 2011||Sandisk Technologies Inc.||Dual bus ExpressCard peripheral device|
|US8086777 *||Dec 27, 2011||Giga-Byte Technology Co., Ltd.||Multimedia system|
|US8092257||Jan 10, 2012||Sandisk Technologies Inc.||Memory card for an expresscard slot|
|US8205018 *||Jan 13, 2010||Jun 19, 2012||Rgb Systems, Inc.||Method and apparatus for implementing a limited functionality embedded universal serial bus (USB) host controller on a fully functional downstream USB port|
|US8321956||Nov 27, 2012||Microsoft Corporation||Remote access control of storage devices|
|US8417845 *||Apr 9, 2013||Samsung Electronics Co., Ltd.||Method and apparatus transferring data via universal serial bus|
|US8447893 *||Jun 13, 2012||May 21, 2013||Rgb Systems, Inc.||USB peripheral device comprising limited function USB host controller|
|US8539125||Feb 4, 2012||Sep 17, 2013||Michael Ford||Combined USB flash drive cap audio device|
|US8539217 *||Jan 25, 2010||Sep 17, 2013||Honeywell International Inc.||Method and system to facilitate data transfer to a device|
|US8561295||Jun 29, 2007||Oct 22, 2013||Sandisk Technologies Inc.||Method of adapting an expresscard slot for smaller form factor memory compatibility|
|US8631167 *||Dec 22, 2009||Jan 14, 2014||Sony Corporation||System and method for reproduction control means for automatically reproducing audio type data recorded in USB device in response to detecting means|
|US8719660 *||Dec 20, 2011||May 6, 2014||Sandisk Technologies Inc.||Apparatus and methods for indicating the health of removable storage devices|
|US8776232 *||Jul 17, 2009||Jul 8, 2014||Phison Electronics Corp.||Controller capable of preventing spread of computer viruses and storage system and method thereof|
|US8793413||Nov 9, 2010||Jul 29, 2014||Seagate Technology Llc||Adaptable storage cartridge system|
|US9026690 *||Apr 18, 2013||May 5, 2015||Kyocera Document Solutions Inc.||Display device having connection receiving portion for external storage device and image forming apparatus having display panel|
|US9043931 *||May 31, 2013||May 26, 2015||Sung Ub Moon||USB drive with multiple printed circuit board layers for storing data in a memory|
|US9104821||Dec 31, 2008||Aug 11, 2015||Intel Corporation||Universal serial bus host to host communications|
|US9111103||Nov 26, 2012||Aug 18, 2015||Microsoft Technology Licensing, Llc||Remote access control of storage devices|
|US9330282 *||Jun 10, 2009||May 3, 2016||Microsoft Technology Licensing, Llc||Instruction cards for storage devices|
|US20040129776 *||Sep 26, 2003||Jul 8, 2004||Samsung Electronics Co., Ltd.||Security monitor apparatus and method using smart card|
|US20050036397 *||Aug 11, 2004||Feb 17, 2005||Via Technologies, Inc.||Detecting device and method for determining type and insertion of flash memory card|
|US20050091437 *||Oct 28, 2004||Apr 28, 2005||Hung-Chun Yang||Multi-function universal serial bus wireless bridge|
|US20050114587 *||Nov 22, 2003||May 26, 2005||Super Talent Electronics Inc.||ExpressCard with On-Card Flash Memory with Shared Flash-Control Bus but Separate Ready Lines|
|US20050201394 *||Mar 4, 2005||Sep 15, 2005||Hon Hai Precision Industry Co., Ltd.||Storage gateway and data backup method therefor|
|US20050273530 *||Jun 8, 2004||Dec 8, 2005||Pao-Ching Tseng||Combined optical storage and flash card reader apparatus using sata port and accessing method thereof|
|US20050278469 *||Jun 6, 2005||Dec 15, 2005||Samsung Electronics Co., Ltd.||Computer system and control method of the same|
|US20060085800 *||Oct 18, 2004||Apr 20, 2006||Behavior Computer Tech Corp.||Internal optical disk drive|
|US20060098507 *||Oct 3, 2005||May 11, 2006||Ching-Fu Hung||Bridging circuit|
|US20060106954 *||Nov 12, 2004||May 18, 2006||Woodbridge Nancy G||Memory reuse for multiple endpoints in USB device|
|US20060106962 *||Nov 17, 2004||May 18, 2006||Woodbridge Nancy G||USB On-The-Go implementation|
|US20060168387 *||Jan 26, 2005||Jul 27, 2006||Phison Electronics Corp.||[crad reader with pci express]|
|US20060285559 *||Jun 16, 2005||Dec 21, 2006||Chih-Hung Cheng||Method for controlling host from device coupled thereto using universal serial bus and system thereof|
|US20070064854 *||Jul 28, 2005||Mar 22, 2007||Sony Corporation||Data processing apparatus and method|
|US20070065119 *||Aug 14, 2006||Mar 22, 2007||Msystems Ltd.||Portable selective memory data exchange device|
|US20070066119 *||Sep 21, 2005||Mar 22, 2007||Tsung-Chu Wu||Memory device with serial AT attachment|
|US20070143543 *||Dec 15, 2006||Jun 21, 2007||Power Quotient International Co., Ltd.||Low profile storage device|
|US20070143544 *||Dec 18, 2006||Jun 21, 2007||Power Quotient International Co., Ltd.||Low profile card reading device|
|US20070215701 *||Aug 8, 2006||Sep 20, 2007||Fujitsu Limited||Information processing device that writes data to an attachable/detachable recording medium and control method thereof|
|US20070239935 *||Dec 23, 2005||Oct 11, 2007||Power Data Communications Co., Ltd. & Chien-Yuan Chen||Digital storage device|
|US20070252010 *||Sep 29, 2006||Nov 1, 2007||Carlos Gonzalez||Credit Card Sized USB Flash Drive|
|US20080022035 *||Jun 13, 2007||Jan 24, 2008||Omnidirectional Control Technology, Inc.||Recordable device that could record flash disks without computers|
|US20080071933 *||Sep 20, 2005||Mar 20, 2008||Masao Nonaka||Processor|
|US20080087731 *||Dec 10, 2007||Apr 17, 2008||Carlos Gonzalez||Credit card sized usb flash drive|
|US20080147899 *||Dec 15, 2006||Jun 19, 2008||Smart Modular Technologies, Inc.||Portable universal serial bus memory devices and methods for using such devices|
|US20080147931 *||Oct 17, 2006||Jun 19, 2008||Smart Modular Technologies, Inc.||Data striping to flash memory|
|US20080166897 *||Jan 5, 2007||Jul 10, 2008||Jonathan Hubert||Expandable and collapsible peripheral device|
|US20080166898 *||Jan 5, 2007||Jul 10, 2008||Jonathan Hubert||Method of making an expandable and collapsible peripheral device|
|US20080191032 *||Apr 15, 2008||Aug 14, 2008||Sandisk Corporation||Expandable and collapsible peripheral device|
|US20080198544 *||Oct 30, 2007||Aug 21, 2008||Brendan Keith Schenk||Two port usb digital storage device|
|US20080209079 *||Feb 1, 2008||Aug 28, 2008||Ty Joseph Caswell||Personal information communication device and method|
|US20080228986 *||Mar 12, 2007||Sep 18, 2008||Luca Lodolo||Architecture for controlling peripheral devices|
|US20080272191 *||May 1, 2007||Nov 6, 2008||Yen Shin||Identification card holder with flash memory card reader|
|US20080288698 *||May 15, 2008||Nov 20, 2008||Genesys Logic, Inc.||Card reader controlling apparatus based on secure digital protocol|
|US20090002933 *||Jun 29, 2007||Jan 1, 2009||Jonathan Hubert||Memory card for an expresscard slot|
|US20090004920 *||Jun 29, 2007||Jan 1, 2009||Jonathan Hubert||Method of adapting an expresscard slot for use with portable memory cards|
|US20090004921 *||Jun 29, 2007||Jan 1, 2009||Jonathan Hubert||Adapter system for use with an expresscard slot|
|US20090006681 *||Jun 29, 2007||Jan 1, 2009||Jonathan Hubert||Dual bus expresscard peripheral device|
|US20090006682 *||Jun 29, 2007||Jan 1, 2009||Jonathan Hubert||Method of adapting an expresscard slot for smaller form factor memory compatibility|
|US20090006698 *||Jun 29, 2007||Jan 1, 2009||Jonathan Hubert||Adapter for an expresscard slot|
|US20090006707 *||Jun 29, 2007||Jan 1, 2009||Jonathan Hubert||Method of using the dual bus interface in an expresscard slot|
|US20090088088 *||Oct 14, 2008||Apr 2, 2009||Crick Information Technologies||Personal Information Communication Device and Method|
|US20090182935 *||May 17, 2007||Jul 16, 2009||Xanto Technologies S.R.L.||Mass storage device, in particular of the usb type, and related method for transferring data|
|US20090259785 *||Apr 11, 2008||Oct 15, 2009||Sandisk Il Ltd.||Direct data transfer between slave devices|
|US20090286484 *||May 19, 2008||Nov 19, 2009||Lgc Wireless, Inc.||Method and system for performing onsite maintenance of wireless communication systems|
|US20100169511 *||Dec 31, 2008||Jul 1, 2010||Dunstan Robert A||Universal serial bus host to host communications|
|US20100173517 *||Mar 19, 2010||Jul 8, 2010||Jonathan Hubert||Memory card for an expresscard slot|
|US20100180052 *||Jul 15, 2010||Sony Corporation||Information processing apparatus, information processing method, and program|
|US20100185843 *||Jan 20, 2009||Jul 22, 2010||Microsoft Corporation||Hardware encrypting storage device with physically separable key storage device|
|US20100235655 *||Jan 13, 2010||Sep 16, 2010||Tauscher Brian E||Method and apparatus for implementing a limited functionality embedded universal serial bus (USB) host controller on a fully functional downstream USB port|
|US20100262726 *||Oct 14, 2010||Tauscher Brian E||Method and apparatus for implementing a limited functionality embedded universal serial (USB) host controller on a fully functional downstream USB port|
|US20100287616 *||Jul 17, 2009||Nov 11, 2010||Phison Electronics Corp.||Controller capable of preventing spread of computer viruses and storage system and method thereof|
|US20100318714 *||Jun 9, 2010||Dec 16, 2010||Samsung Electronics Co., Ltd.||Method and apparatus transferring data via universal serial bus|
|US20100318810 *||Dec 16, 2010||Microsoft Corporation||Instruction cards for storage devices|
|US20100325736 *||Jun 17, 2009||Dec 23, 2010||Microsoft Corporation||Remote access control of storage devices|
|US20110099315 *||Dec 29, 2009||Apr 28, 2011||Giga-Byte Technology Co., Ltd.||Multimedia system|
|US20110185207 *||Jul 28, 2011||Honeywell International Inc.||Pcmcia memory card with ethernet/wireless connectivity and battery backup for avionics applications|
|US20110231679 *||Aug 1, 2008||Sep 22, 2011||Invent Technology Solutions Limited||Energy saving device|
|US20110302357 *||Dec 8, 2011||Sullivan Jason A||Systems and methods for dynamic multi-link compilation partitioning|
|US20120129393 *||Nov 18, 2010||May 24, 2012||Tien-Ting Peng||Integrated connector|
|US20120254486 *||Jun 13, 2012||Oct 4, 2012||Rgb Systems, Inc.||Usb peripheral device comprising limited function usb host controller|
|US20130151644 *||Jun 13, 2013||Microsoft Corporation||Copying data onto an expandable memory|
|US20130159797 *||Dec 20, 2011||Jun 20, 2013||Sandisk Technologies Inc.||Apparatus and methods for indicating the health of removable storage devices|
|US20130290576 *||Apr 18, 2013||Oct 31, 2013||Kyocera Document Solutions Inc.||Display device having connection receiving portion for external storage device and image forming apparatus having display panel|
|US20140164678 *||Dec 12, 2012||Jun 12, 2014||Key Technology Corporation||Intelligent detection device of solid state hard disk combining a plurality of nand flash memory cards and detecting method for the same|
|US20140317757 *||May 31, 2013||Oct 23, 2014||Sung Ub Moon||USB drive with multiple printed circuit board layers for storing data in a memory|
|US20150169483 *||Jul 30, 2012||Jun 18, 2015||Mitsubishi Electric Corporation||Expansion unit|
|USRE45457||Oct 20, 2011||Apr 7, 2015||Micron Technology, Inc.||Memory reuse for multiple endpoints in USB device|
|CN101794266B||Jan 14, 2010||Nov 14, 2012||索尼公司||Information processing apparatus, information processing method, and program|
|CN101814011A *||Feb 24, 2010||Aug 25, 2010||恩益禧电子股份有限公司||USB host controller and controlling method for USB host controller|
|CN101814011B||Feb 24, 2010||Jun 18, 2014||瑞萨电子株式会社||USB host controller and controlling method for USB host controller|
|WO2013015832A1 *||Jul 24, 2012||Jan 31, 2013||Villa-Real Antony-Euclid C||Practical multi-purpose color-coded flash drive organizer with compartmentalized separate memory sectors for enhanced efficiency and better effective anti-confusion performances in global personal, educational, professional, business and organizational works|
|U.S. Classification||710/305, 711/115, 710/301|
|International Classification||G06F1/16, G06F13/00, G06F3/08|
|Mar 15, 2004||AS||Assignment|
Owner name: SUPER TALENT ELECTRONICS INC., CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, BEN WEI;CHU, TZU-YIH;SEE, SUN-TECK;REEL/FRAME:014426/0424
Effective date: 20040310
|Sep 7, 2009||REMI||Maintenance fee reminder mailed|
|Jan 31, 2010||LAPS||Lapse for failure to pay maintenance fees|
|Mar 23, 2010||FP||Expired due to failure to pay maintenance fee|
Effective date: 20100131